Armiger

n. nobleman entitled to bear heraldic arms; squire who carries a knight's armor

Armiger may also refer to the AGM Armiger anti-radiation missile. An armiger is a person entitled to use a coat of arms. Such a person is said to be armigerous.Originally an armiger was an Armour-Bearer or Esquire, attendant upon a Knight, but bearing his own unique armorial device. The term "armiger" is well-defined only within jurisdictions (such as the United Kingdom, Canada, Ireland, and Spain) where heraldry is regulated by the state or heraldic body (such as the College of Arms in England, Wales, and Northern Ireland, the Office of the Chief Herald in Ireland or the Court of the Lord Lyon in Scotland), since anyone may use any coat of arms in jurisdictions, such as the United States, which lack regulated heraldry.
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Noun
1. a squire carrying the armor of a knight
(synonym) armor-bearer
(hypernym) squire
2. a nobleman entitled to bear heraldic arms
(hypernym) Lord, noble, nobleman

(n.)
Formerly, an armor bearer, as of a knight, an esquire who bore his shield and rendered other services. In later use, one next in degree to a knight, and entitled to armorial bearings. The term is now superseded by esquire.
  

The Norman predecessor of what came to be known as squire , young men who were in training to be knights , a term popular during the 13th century. See also Chronique: The Journal of Chivalry #8 .